That carrier has been there for as long as I can remember. Years ago I use to check into the Icom net that was on 14.317. The carrier on 316 always was a problem for me. Never could figure out where it was coming from.

Interesting. I had a carrier on 14.310 and it turned out to be a cordless phone "base."Now if anyone can tell me what the multiple, very close in freq carriers are at around 14.029 MHz that would be great.

If any one in your area has an embedded control computer of older PC style and vintage, the master clock in all those PC and there clones was 14.31818 MHz devide this by 3 and you get the old 4.77 mhz clock that they ran. A cheap stunt to allow on master clock to generate the 1 on, two off clock used by the cpu and to produce the color burst frequency used by the old color video cards. DIgital oscillator so dirty as H@@@.

Color burst oscillotors tend to generate signals on 3.5780 and 7.160 as well where PCs often do not. They just polute on 4.77, 14.318 and multiples thereof.

The amount of emissions allowed for home computing devices was significantly increased to allow the PC to be marketed with a display for home use.

I believe there was a standard for overall emissions for "home" as opposed to "computing/business" class computing devices in the early 80's. The time when all the Apple units came with the traces for but no parts installed for video modulators, allowing them to bypass the stricter "home" Class B computing device requirements. Atari's went with the modulator so all their peripherals were run through a sheilded serial bus.

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